Turtleburp wrote:No drains though:We documented clear andsynchronous threshold declines of 110 of 238 macroinvertebrate taxa in response to low levelsof impervious cover. Approximately 80% of the declining taxa did so between ;0.5% and 2%impervious cover, whereas the last 20% declined sporadically from ;2% to 25% imperviouscover. Synchrony of individual responses resulted in distinct community-level thresholdsranging from 0.68% (mountains), 1.28% (piedmont), and 0.96% (coastal plain) imperviouscover. Upper limits (95% confidence intervals) of community thresholds were ,2% cover in allregions. Within distinct physiographic classes, higher-gradient, smaller catchments requiredless impervious cover than lower gradient, larger catchments to elicit community thresholds.Relatively few taxa showed positive responses to increasing impervious cover, and those thatdid gradually increased in frequency and abundance, approximating a linear cumulativedistribution. The sharp, synchronous declines of numerous taxa established a consistentthreshold response at exceptionally low levels of catchment urbanization, and uncertaintyregarding the estimation of impervious cover from satellite data was mitigated by severalcorroborating lines of evidence. We suggest that threshold responses of communities to urbanand other novel environmental gradients may be more prevalent than currently recognized.

I always write like that after my second bottle of Robitussin. My editor hates it.I tell her it's science fiction. Then I fire her.

He's a mystery wrapped in a riddle, inside an enigma, painted in hot pants. - SavannahPropane ToysHow to do it wrong:

Dogs are the leaders of the planet. If you see two life forms, one of them’s making a poop, the other one’s carrying it for him, who would you assume is in charge? " I am a controlled substance". Savannah.

My cats are cuter than your grandkids!"We in Arizona (and the rest of the United States) have been more than patient waiting for Washington to act.""Government is not the solution to our problems, government is the problem."